Finding the Fourth Proportional to 1,606.56, 2,217.29 and 943.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,606.56 : 2,217.29 = 943.78 : x
2. Step 2: Convert to fraction form
   1,606.56/2,217.29 = 943.78/x
3. Step 3: Cross multiply
   1,606.56x = 2,217.29 × 943.78
4. Step 4: Simplify right side
   1,606.56x = 2,092,633.96
5. Step 5: Solve for x
   x = 2,092,633.96/1,606.56
6. Step 6: Final answer
   x = 1,302.56